Tivoli Storage Manager for Windows Quick Start


Storage Devices and Media

TSM represents physical storage devices and media with the following administrator-defined objects:

Library
A TSM library is one or more drives (and possibly robotic devices) with similar media mounting requirements.

Drive
Each TSM-defined drive represents a drive mechanism in a tape or optical device.

Device Class
Each device is associated with a device class that specifies the device type and how the device manages its media. TSM has a predefined device class (DISK) for random access devices.

Storage Pools and Volumes
A storage pool is a named collection of storage volumes of the same media type. A storage pool is associated with a device class. For example, an 8mm tape storage pool contains only 8mm tape volumes. A storage pool volume is associated with a specific storage pool.

Figure 15 summarizes the relationships among the physical device environment, TSM storage objects, and TSM clients. The numbers below correspond to the numbers in the figure.

(1)
When clients are registered, they are associated with a policy domain. The other TSM policy objects are within the policy domain.

(2), (3)
When a file is backed up, archived, or migrated from a client, it is bound to a management class. A management class and the backup and archive copy groups within it specify where files are stored and how they are managed when they are backed up, archived, or migrated from a client (space-managed files).

(4), (5)
Storage pools are the destinations for backed up, archived, or space-managed files. Copy groups specify storage pools for backed up or archived files. Management classes specify storage pools for space-managed files.

Storage pools are mapped to device classes, which represent devices. The storage pool contains volumes as indicated in the device type associated with the device class. For example, a storage pool that is mapped to a device class with a device type of 8MM contains only 8mm tapes.

All devices require a device class that specifies a device type. Tape devices also require a library and drive for management of media, including the mounting of that media.

(6)
Files that are initially stored on disk storage pools can migrate to tape storage pools if the pools are set up in a storage hierarchy.

Figure 15. Putting it All Together

Putting It All Together


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